EP2371617A2 - Appareil coulissant de siège pour véhicule - Google Patents

Appareil coulissant de siège pour véhicule Download PDF

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Publication number
EP2371617A2
EP2371617A2 EP20110154470 EP11154470A EP2371617A2 EP 2371617 A2 EP2371617 A2 EP 2371617A2 EP 20110154470 EP20110154470 EP 20110154470 EP 11154470 A EP11154470 A EP 11154470A EP 2371617 A2 EP2371617 A2 EP 2371617A2
Authority
EP
European Patent Office
Prior art keywords
rail
memory
holding
upper rail
engagement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20110154470
Other languages
German (de)
English (en)
Other versions
EP2371617B1 (fr
EP2371617A3 (fr
Inventor
Hideo Nihonmatsu
Ryousuke Mizuno
Genta Moriyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of EP2371617A2 publication Critical patent/EP2371617A2/fr
Publication of EP2371617A3 publication Critical patent/EP2371617A3/fr
Application granted granted Critical
Publication of EP2371617B1 publication Critical patent/EP2371617B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/08—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device
    • B60N2/0831—Movement of the latch
    • B60N2/0837—Movement of the latch pivoting
    • B60N2/0843—Movement of the latch pivoting about a longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/07—Slide construction
    • B60N2/0702—Slide construction characterised by its cross-section
    • B60N2/0705—Slide construction characterised by its cross-section omega-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/08—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device
    • B60N2/0812—Location of the latch
    • B60N2/0825—Location of the latch outside the rail
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/12—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable and tiltable
    • B60N2/123—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable and tiltable and provided with memory locks

Definitions

  • This disclosure relates to a seat slide apparatus for a vehicle.
  • the occupant seated on the vehicle seat for example, releases the lock member (as a result, the lock member is brought to an unlocked state to thereby permit the relative movement between the lower rail and the upper rail) on a basis of an operation of an operation handle so as to adjust the position of the vehicle seat.
  • the receiving portion 94 and the memory plate 95 also hold the memory member 93 so that the engagement of the memory member 93 with the lower rail 91 is maintained in the unlocked state of the lock member in association with a forward folding operation of a seat back of the vehicle seat.
  • the movement of the upper rail 92 i.e., the vehicle seat
  • the engagement between the memory member 93 and the lower rail 91 is maintained by a pressing portion 95a of the memory plate 95.
  • the upper rail 92 i.e., the vehicle seat
  • the upper rail 92 is moved to an original position (a memory position) where the engagement between the memory member 93 and the lower rail 91 by the pressing portion 95a of the memory plate 95 is releasable and thereafter the seat back is pulled up from the forwardly folded state.
  • the lock member is again brought to the locked state at the original position where the movement of the upper rail is restricted.
  • a position where the memory member 93 is held (i.e., a holding position thereof) may vary on a basis of an accumulation of a production variation of each of the receiving portion 94 and the memory plate 95 (the front holding portion 95b), an assembly variation thereof, and the like.
  • the memory member 93 may be loose and an operation of the memory member 93 when the memory member 93 engages with the lower rail 91 may be unstable.
  • positions of an engagement bore 91 a formed at the lower rail 91 and a memory pin 93a of the memory member 93 may not match in the longitudinal direction or a height direction of the lower rail 91, which leads to the aforementioned unstable operation of the memory member 93.
  • a seat slide apparatus for a vehicle includes a first rail, a second rail movable relative to the first rail, a lock member restricting a relative movement between the first rail and the second rail, a memory member movably supported within an inner void that is formed between the first rail and the second rail in a longitudinal direction of the first rail, the memory member being prevented from moving by an engagement with the first rail, a first holding member fixed to the second rail and holding the memory member to move integrally with the second rail in a state where a restriction of the relative movement between the first rail and the second rail by the lock member is released on a basis of an operation of an operation handle, and a second holding member holding the memory member so that the engagement of the memory member with the first rail is maintained in a state where the restriction of the relative movement between the first rail and the second rail by the lock member is released in association with a forward folding operation of a seat back of a seat configured to be fixed to the second rail.
  • the first holding member integrally includes a body portion that is engageable with a front end portion of the memory member and a memory member holding portion that makes contact with a rear end portion of the memory member to sandwich the memory member in a state where the body portion engages with the front end portion of the memory member.
  • the memory pin is retracted to the slider body while being guided along the inclination surface that is in contact with the upper end of the rear end surface of the memory pin.
  • a release of a state where the memory member is held by the memory member holding portion and an engagement of the memory pin with the first rail may be smoothly conducted.
  • the memory member holding portion includes an engagement portion at a surface opposite from a surface with which the memory member is engageable, the engagement portion engaging with a front end of the second holding member.
  • the front end of the second holding member engages with the engagement portion so as to be fixed to the second rail via the memory member holding portion (i.e., the first holding member).
  • the memory member holding portion i.e., the first holding member.
  • Fig. 1 is an exploded perspective view of a seat slide apparatus for a vehicle according to an embodiment disclosed here;
  • Fig. 2 is a longitudinal sectional view of the seat slide apparatus according to the embodiment
  • Fig. 3 is a cross sectional view taken along line III-III illustrated in Fig. 2 ;
  • Fig. 4 is a cross sectional view taken along line IV-IV illustrated in Fig. 2 ;
  • Figs. 5A and 5B are longitudinal sectional views each illustrating an operation of the seat slide apparatus in a state where a memory piece is arranged at a foremost portion of a lower rail according to the embodiment;
  • Fig. 6 is a longitudinal sectional view illustrating the operation of the seat slide apparatus in a state where the upper rail is arranged at a rearmost position according to the embodiment;
  • Fig. 7 is a longitudinal sectional view illustrating the operation of the seat slide apparatus in a state where the upper rail is arranged at a foremost position according to the embodiment;
  • Figs. 8A and 8B are cross sectional views each illustrating the operation of the seat slide apparatus according to the embodiment
  • Fig. 9 is an exploded perspective view of the lower rail and a foremost stopper bracket according to the embodiment.
  • Figs. 10A and 10B are perspective views each illustrating a slider body according to the embodiment.
  • Fig. 11 is a perspective view of a front stopper bracket according to the embodiment.
  • Fig. 12 is a perspective view of a memory holding bracket according to the embodiment.
  • Fig. 13 is a side view of a seat for the vehicle according to the embodiment.
  • Fig. 14 is a longitudinal sectional view illustrating a known seat slide apparatus for a vehicle.
  • Fig. 15 is a schematic enlarged view of a portion of the known seat slide apparatus.
  • Fig. 13 is a side view schematically illustrating a seat for a vehicle (vehicle seat) 1 provided at a front seat side of a vehicle such as an automobile.
  • vehicle seat vehicle seat
  • directions and orientations such as left, right, front, rear, top, and bottom correspond to those when viewed from a seat occupant seated on the vehicle seat 1.
  • a lower rail 3 serving as a first rail and extending in a longitudinal direction of the vehicle is fixed to a vehicle floor 2 via front and rear leg brackets 9.
  • An upper rail 4 serving as a second rail is attached to the lower rail 3 so as to be movable relative thereto.
  • one pair of the lower rail 3 and the upper rail 4 is provided at one side (i.e., a left side) of the vehicle seat 1 in the width direction while another pair of the lower rail 3 and the upper rail 4 is provided at the other side (i.e., a right side) of the vehicle seat 1.
  • FIG. 13 the lower rail 3 and the upper rail 4 arranged at the left side of the vehicle seat 1 are illustrated.
  • a seat 5 is fixed and supported by the upper rails 4.
  • the seat 5 includes a seat cushion 7 serving as a seating portion and a seat back 8 tiltably supported about a rotational axis O at a rear end of the seat cushion 7.
  • a relative movement between the lower rail 3 and the upper rail 4 is basically restricted.
  • a release handle 6 serving as an operation handle is provided to release the restricted state of the relative movement between the lower rail 3 and the upper rail 4.
  • a seat slide apparatus for a vehicle will be explained with reference to Figs. 1 to 4 .
  • Figs. 3 and 4 some components of the seat slide apparatus are omitted for convenience.
  • one pair of the lower rail 3 and the upper rail 4 is provided at one side of the vehicle seat 1 in the width direction while another pair of the lower rail 3 and the upper rail 4 is provided at the other side of the vehicle seat 1. Therefore, a structure including the lower rail 3 and the upper rail 4 provided at one side of the vehicle seat 1 in the width direction is substantially the same as a structure including the lower rail 3 and the upper rail 4 provided at the other side of the vehicle seat 1.
  • Figs. 1 and 2 the structure including the lower rail 3 and the upper rail 4 provided at the right side of the vehicle seat 1 in the width direction is illustrated and an explanation thereof will be described below.
  • the lower rail 3 includes a pair of side wall portions 11 and a bottom wall portion 12.
  • Each of the side wall portions 11 extends in a substantially vertical direction of the vehicle from respective ends of the bottom wall portion 12 in the width direction.
  • the side wall portions 11 are connected to each other by the bottom wall portion 12.
  • folding wall portions 13 are continuously formed at respective upper ends of the side wall portions 11 so as to bend inwardly in the width direction and then fold downwardly.
  • the upper rail 4 includes a pair of side wall portions 14 and a cover wall portion 15.
  • Each of the side wall portions 14 extends in the substantially vertical direction of the vehicle between the folding wall portions 13 of the lower rail 3.
  • the side wall portions 14 are connected to each other by the cover wall portion 15.
  • folding wall portions 16 are continuously formed at respective lower ends of the side wall portions 14 so as to bend outwardly in the width direction and then fold upwardly.
  • Each of the folding wall portions 16 is arranged so as to be surrounded by the side wall portion 11 and the folding wall portion 13.
  • the lower rail 3 and the upper rail 4 are each formed substantially into a U-shape in a cross section (i.e., a rail cross section of each of the lower rail 3 and the upper rail 4 is formed into a U-shape) so that openings of the lower rail 3 and the upper rail 4 face each other.
  • the lower rail 3 and the upper rail 4 are prevented from disengaging from each other in the vertical direction by an engagement between the folding wall portions 13 and 16.
  • the rail cross section of each of the lower rail 3 and the upper rail 4 has a box shape (rectangular shape). As illustrated in Fig. 3 , the lower rail 3 constitutes an inner void S together with the upper rail 4.
  • Multiple circular engagement bores 12a are formed at respective intervals at the bottom wall portion 12 of the lower rail 3 in the longitudinal direction.
  • multiple square lock bores 13a are formed at the respective intervals at one of the folding wall portions 13 of the lower rail 3 (i.e., the folding wall portion 13 illustrated on the left side in Fig. 1 ) in the longitudinal direction.
  • Multiple insertion bores 14a are formed at the respective intervals at one of the side wall portions 14 of the upper rail 4 (i.e., the side wall portion 14 illustrated on the left side in Fig. 1 ).
  • the four insertion bores 14a are arranged in such a manner so as to face four of the multiple lock bores 13a arranged next to each other in the longitudinal direction and formed at the folding wall portion 13.
  • multiple insertion bores 16a are formed at the respective intervals at one of the folding wall portions 16 of the upper rail 4 (which is illustrated on the left side in Fig. 1 ) in the longitudinal direction.
  • the four insertion bores 16a are arranged in such a manner to face the four insertion bores 14a.
  • a rectangular through hole 15a and a rectangular through bore 15b are formed at a shoulder portion defined between the cover wall portion 15 and one of the side wall portions 14 (which is illustrated on the left side in Fig. 1 ) of the upper rail 4.
  • the through hole 15a is provided at substantially the same position as the insertion bores 14a, and the like, in the longitudinal direction.
  • the through bore 15b is provided at a front side of the through hole 15a in the longitudinal direction.
  • the front and rear support brackets 21 and 22 are tightened to the cover wall portion 15 by multiple rivets 23.
  • Bearing pieces 21 a and 22a are formed in a projecting manner at the front and rear support brackets 21 and 22 respectively so as to be positioned at front and rear ends of the through hole 15a.
  • the bearing pieces 21 a and 22a face each other in the longitudinal direction of the upper rail 4.
  • a lock lever 26 formed by a plate member and serving as a lock member is rotatably supported by the front and rear support brackets 21 and 22 via a lock lever pin that is inserted into the bearing pieces 21a and 22a.
  • the lock lever 26 includes a body portion 26a having an elongated shape and a pair of support pieces 26b.
  • the body portion 26a has a length shorter than a distance between the bearing pieces 21 a and 22a.
  • the support pieces 26b bend from respective ends of the body portion 26a.
  • the lock lever 26 is rotatably supported by the front and rear support brackets 21 and 22 in a state where the lock lever pin penetrates through the bearing pieces 21 a and 22a, and the support pieces 26b.
  • lock projections 26c specifically, four lock projections 26c are formed at the respective intervals at the lock lever 26.
  • the lock projections 26c extend downwardly from the body portion 26a and bend outwardly.
  • the lock projections 26c are introduced to the rail cross section of the upper rail 4 through the through hole 15a.
  • Each of the lock projections 26c is arranged so as to engage or disengage relative to the facing insertion bores 14a and 16a when rotating about the lock lever pin.
  • the relative movement between the lower rail 3 and the upper rail 4 is restricted. Accordingly, the movement of the upper rail 4 relative to the lower rail 3 is restricted at the predetermined intervals within a range from a rearmost position, where one of the lock projections 26c of the lock lever 26 is inserted into the lock bore 13a arranged at a rearmost side, to a foremost position, where one of the lock projections 26c is inserted into the lock bore 13a arranged at a foremost side. As a result, the position of the seat 5 supported by the upper rails 4 is determined. On the other hand, the relative movement between the lower rail 3 and the upper rail 4 is allowed when the lock projections 26c of the lock lever 26 sequentially disengage from the insertion bores 16a and the lock bores 13a.
  • the slider body 31 is formed substantially into a block shape having a width smaller than a distance between the side wall portions 14 of the upper rail 4. As illustrated in Figs. 10A and 10B , a pair of guide portions 31 a is formed at a lower surface of the slider body 31 along a longitudinal direction so as to project downwardly. Specifically, the guide portions 31 a are formed at both edges in a width direction on the lower surface of the slider body 31 while projecting in a rib shape.
  • the slider body 31 is slidably supported by the bottom wall portion 12 of the lower rail 3 via the guide portions 31 a so as not to interfere with the side wall portions 14 of the upper rail 4 within the inner void S.
  • a projecting portion 31 b is formed at a front end of the slider body 31 to project forward.
  • a rear contact portion 31 c is formed at a rear end of the slider body 31 to project rearward in an inclined manner. The rear contact portion 31c inclines downward and rearward.
  • a front contact portion 31 d is formed by a stepped surface between the lower surface and the projecting portion 31 b of the slider body 31.
  • a pair of contact portions 31 e serving as front end portions, is formed between the projecting portion 31 b and the rear contact portion 31 c.
  • the contact portions 31e extend in opposite directions from each other, i.e., in both outer directions in the width direction from respective upper end portions of the slider body 31.
  • the slider body 31 includes a guide hole 31f having substantially a square shape and opening upwardly as illustrated in Figs. 2 and 10B , and an insertion bore 31 g penetrating through a bottom wall of the guide hole 31f and having an inner diameter substantially equal to an inner diameter of the engagement bore 12a formed at the bottom wall portion 12 of the lower rail 3.
  • the coil spring 32 is accommodated within the guide hole 31f of the slider body 31.
  • the memory pin 33 is mounted at the guide hole 31f while being inserted into the coil spring 32.
  • the memory pin 33 includes a head portion 33a serving as a rear end portion and formed substantially into a square pole so as to mach an outer shape of the guide hole 31f.
  • the memory pin 33 is placed on the coil spring 32.
  • the memory pin 33 also includes an engagement portion 33b having substantially a column shape and inserted into the coil spring 32 by projecting downwardly from the head portion 33a.
  • An outer diameter of the engagement portion 33b is specified to be substantially equal to an inner diameter of the insertion bore 31g (and the engagement bore 12a).
  • the memory pin 33 moves downward against the biasing force of the coil spring 32 in a state where the engagement bore 12a opens at a lower side of the engagement portion 33b, the lower end of the engagement portion 33b penetrates through the insertion bore 31 g and the engagement bore 12a. At this time, the memory piece 30 is fixed to the bottom wall portion 12 of the lower rail 3 so as not to be movable in the longitudinal direction.
  • a rear end engagement bore 37 that is one of the multiple engagement bores 12a formed at the bottom wall portion 12 of the lower rail 3 is arranged at a rearmost side among the engagement bores 12a.
  • the rear end engagement bore 37 is an elongated bore that extends rearward from a point away from the adjacent engagement bore 12a, i.e., one of the engagement bores 12a arranged next to the rear end engagement bore 37, by the predetermined interval.
  • the foremost stopper bracket 41 includes an attachment portion 42 having an elongated shape and extending in the longitudinal direction of the lower rail 3.
  • the attachment portion 42 is in contact with a lower surface (i.e., an outer surface) of the bottom wall portion 12.
  • the attachment portion 42 includes a circular-shaped insertion bore 42a that opens towards the pin insertion bore 38.
  • the attachment portion 42 of the foremost stopper bracket 41 is tightened to the bottom wall portion 12 by a riveting of the rearmost stopper pin 40 that is inserted into the pin insertion bore 38 and the insertion bore 42a at the rear side of the memory piece 30.
  • the rearmost stopper pin 40 is arranged in a projecting manner so as not to block or interfere with the movement of the upper rail 4 in the longitudinal direction and so as to block or interfere with the movement of the slider body 31 of the memory piece 30 by contacting with the rear contact portion 31 c thereof.
  • each of the flanges 43 of the foremost stopper bracket 41 is arranged in a projecting manner so as not to block the movement of the slider body 31. That is, a space formed below each of the contact portions 31 e of the slider body 31 constitutes a passage P by which an interference between the slider body 31 and the flange 43 is avoidable.
  • a pair of cut and lift pieces 46 is formed at a rear end portion of the upper rail 4 and at a rear side of the flanges 43.
  • the pair of cut and lift pieces 46 is arranged in a symmetrical manner in the width direction. Specifically, each of the cut and lift pieces 46 is formed at the lower end of the side wall portion 14 connected to the folding wall portion 16.
  • the cut and lift pieces 46 are each cut and bent upward at a predetermined angle so that a distance between upper ends of the cut and lift pieces 46 is shorter than a distance between lower ends thereof to form into straight inclined shapes.
  • the cut and lift pieces 46 protrude within the inner void S.
  • the rearmost stopper pin 40 is arranged between the cut and lift pieces 46 in the width direction.
  • the cut and lift pieces 46 are formed in a projecting manner so that the movement of the cut and lift pieces 46 in the longitudinal direction is not blocked by the rearmost stopper pin 40 and the memory piece 30, and is blocked by the flange portions 43b of the flanges 43.
  • the flanges 43 and the cut and lift pieces 46 restrict a relative movement range between the lower rail 3 and the upper rail 4 by contacting and engaging in association with the relative movement between the lower rail 3 and the upper rail 4. That is, the forward movement of the upper rail 4 relative to the lower rail 3 is restricted to a point where the flanges 43 make contact with the cut and lift pieces 46.
  • a front stopper bracket 50 serving as a first holding member is fixed to a front edge portion of the upper rail 4.
  • the front stopper bracket 50 is provided at a front side of the memory piece 30.
  • the front stopper bracket 50 includes a fitting wall portion 51 in contact with a lower surface (i.e., an inner surface) of the cover wall portion 15, and a pair of engagement wall portions 52 that extend downwardly from respective ends of the fitting wall portion 51 in the width direction, thereby forming into a substantially U-shape opening downwardly.
  • the fitting wall portion 51 and the engagement wall portions 52 each serve as a body portion.
  • the front stopper bracket 50 is fixed to the upper rail 4 in a state where the fitting wall portion 51 is tightened to the cover wall portion 15 by a riveting pin, or the like.
  • the engagement wall portions 52 of the front stopper bracket 50 are arranged in a projecting manner so that the forward movement of the engagement wall portions 52 are not interfered by the front stopper pin 36 and the flange portions 43b of the flanges 43 and so that the rearward movement of the engagement wall portions 52 are interfered by the contact portions 31e of the memory piece 30.
  • a stepped surface formed at each of the engagement wall portions 52 may make contact with the contact portion 31 e of the memory piece 30 to thereby constitute a front holding portion 52a.
  • the front stopper bracket 50 also includes a rear holding portion 53 having a hook shape and projecting rearward from a rear end of the fitting wall portion 51.
  • the rear holding portion 53 serves as a memory member holding portion. More specifically, the rear holding portion 53 projects at a portion of the rear end of the fitting wall portion 51 between the engagement wall portions 52 in the width direction.
  • the front stopper bracket 50 integrally includes the fitting wall portion 51, the engagement wall portions 52, and the rear holding portion 53.
  • the rear holding portion 53 which inclines downwardly, forms an inclination surface 53a by a lower surface and an engagement portion 53b by an upper surface that is an opposite surface of the lower surface as illustrated in Fig. 8A .
  • the engagement portion 53b inclines in the same manner as the inclination surface 53a.
  • the rear holding portion 53 is arranged at the rear end between the engagement wall portions 52 at the portion close to one side in the width direction (i.e., a left side in Fig. 3 ).
  • the rear holding portion 53 is arranged in a projecting manner so that the longitudinal movement of the rear holding portion 53 is prevented from being interfered by the slider body 31 and the flange portions 43b of the flanges 43 and so that the longitudinal movement of the rear holding portion 53 is interfered by a portion of the head portion 33a, which is positioned at one side in the width direction, of the memory pin 33 that projects upwardly from the slider body 31.
  • a portion of the head portion 33a which is positioned at one side in the width direction, of the memory pin 33 that projects upwardly from the slider body 31.
  • the inclination surface 53a of the rear holding portion 53 makes contact with a rear end surface of the head portion 33a of the memory pin 33 that projects upwardly from the slider body 31, thereby holding and supporting the memory piece 30.
  • the memory holding bracket 60 includes multiple guide portions 62, 63, 64, 65, and 66 having intervals from one another in the longitudinal direction and extending upward from an upper end of the body holding portion 61.
  • the guide portions 62 to 65 each project upward in a table shape or a flange shape.
  • the guide portion 66 having a block shape projects upward at a rear side of the guide portion 65.
  • the memory holding bracket 60 is formed in such a manner that the pressing surface 61 a extends in parallel to the bottom wall portion 12 of the lower rail 3 in a state where upper surfaces of the guide portions 62 to 66 are in contact with the lower surface of the cover wall portion 15 of the upper rail 4.
  • a front edge portion of the body holding portion 61 of the memory holding bracket 60 forms a sharp support portion 61 b.
  • a lower surface of the support portion 61 b is cut so as to conform to a sharp corner portion defined between the lower surface of the cover wall portion 15 of the upper rail 4 and the engagement portion 53b of the front stopper bracket 50. Accordingly, the memory holding bracket 60 is inserted into the upper rail 4 from the rear side thereof to the forward direction while the upper surfaces of the guide portions 62 to 66 are slidably in contact with the lower surface of the cover wall portion 15 of the upper rail 4.
  • the fitting portion 65b makes contact with the lower surface of the cover wall portion 15 to thereby elastically deform the projection 65a.
  • the projection 65a moves in the longitudinal direction of the upper rail 4 while a front end of the projection 65a is separated from the cover wall portion 15.
  • the fitting portion 65b reaches the fitting bore 15c so as to engage therewith, the projection 65a is elastically returned to make contact with the lower surface of the cover wall portion 15.
  • the memory holding bracket 60 is prevented from being dislocated relative to the upper rail 4 in the longitudinal direction accordingly.
  • the fitting projections 67 are fitted to the cutout portions 47 of the upper rail 4 in a case where the front edge portion of the memory holding bracket 60, i.e., the support portion 61 b, is supported in the aforementioned manner. Accordingly, at the time when the memory holding bracket 60 is being inserted into the upper rail 4 in the aforementioned manner, the fitting projections 67 move in the longitudinal direction of the upper rail 4 while being pressed by respective inner side surfaces of the side wall portions 14 so as to be elastically deformed at respective upper ends towards the inner side in the width direction.
  • fitting projections 67 reach the respective cutout portions 47 and elastically return to be inserted thereto, the fitting projections 67 fitted to the respective cutout portions 47 are prevented from moving relative to the upper rail 4 in the longitudinal direction.
  • the fitting projections 67 fitted to the cutout portions 47 are arranged at respective lower end portions of the upper rail 4 covered by the folding wall portions 16, thereby preventing an outward exposure of the fitting projections 67.
  • each of the fitting projections 67 includes a cover portion 67b having substantially an L-shape, extending downward from a rear end of the placing portion 67a so as to cover a rear end surface of the cut and lift piece 46 and then extending forward so as to cover a lower surface of the cut and lift piece 46. Accordingly, the cut and lift pieces 46 are prevented from being exposed outside by being covered from a rear side by the cover portions 67b in addition to the placing portions 67a.
  • the memory piece 30 makes contact at the contact portions 31e with the front holding portions 52a and at the rear end surface of the memory pin 33, which projects upward from the slider body 31, with the inclination surface 53a, i.e., the memory piece 30 is held by the front stopper bracket 50.
  • the memory piece 30 moves in the longitudinal direction of the lower rail 3 in association with the movement of the upper rail 4.
  • the inclination surface 53a guides the memory pin 33 to the pressing surface 61a of the memory holding bracket 60 that is continuously arranged in the rear of the inclination surface 53a.
  • the head portion 33a of the memory pin 33 is pressed by the pressing surface 61 a so that the state where the lower end of the engagement portion 33b is positioned within the insertion bore 31g, the engagement bore 12a and the insertion bore 9a is maintained.
  • the memory piece 30 is maintained in a state to be fixed to the lower rail 3. That is, the further forward movement of the upper rail 4 is available while the memory piece 30 is fixed to the lower rail 3.
  • the movement of the upper rail 4 to the foremost position as illustrated in Figs. 5B and 7 is ensured.
  • the relative movement of the upper rail 4 to the lower rail 3 is restricted at the predetermined intervals to the foremost position by the lock lever 26.
  • the position of the seat 5 supported by the upper rail 4 in the longitudinal direction is adjustable relative to the vehicle floor 2 accordingly.
  • the memory piece 30 held by the front stopper bracket 50 is arranged so that that the engagement bore 12a opens below the memory pin 33. That is, the memory piece 30 can be fixed to the lower rail 3 in the aforementioned manner at an arbitrary position, where the movement of the upper rail 4 relative to the lower rail 3 is restricted by the lock lever 26, within a range until the forward movement of the upper rail 4 is restricted by the front stopper pin 36.
  • a support bracket 29 is tightened to the upper surface of the cover wall portion 15 of the upper rail 4.
  • the support bracket 29 is formed by a plate member bending to form into an L-shape.
  • the support bracket 29 extends in the longitudinal direction of the upper rail 4.
  • a release lever 71 having substantially a V-shape and formed by a plate member is rotatably connected to a rear end portion of the support bracket 29.
  • the release lever 71 includes a contact piece 71 a at a front end bending in the width direction.
  • the contact piece 26d of the lock lever 26 is arranged on a rotation locus of the contact piece 71 a.
  • the release lever 71 is constantly biased by a biasing means in a direction where the contact piece 71 a is away from the contact piece 26d (i.e., in a clockwise direction in Fig. 2 ).
  • the release lever 71 rotates about a rotational axis thereof in a counterclockwise direction in Fig. 2 in association with a forward folding operation of the seat back 8, thereby pressing the contact piece 26d of the lock lever 26 by the contact piece 71 a.
  • the restriction of the relative movement between the lower rail 3 and the upper rail 4 by the lock lever 26 is released accordingly.
  • a memory operation lever 72 having a claw shape and formed by a plate member is rotatably connected to substantially an intermediate portion of the support bracket 29 in the longitudinal direction.
  • An end portion of a connection lever 73, of which another end portion is rotatably connected to the release lever 71, is rotatably connected to the memory operation lever 72.
  • the connection lever 73 is formed by a plate member while having a bar shape.
  • the memory operation lever 72 rotates about a rotational axis thereof in a counterclockwise direction in Fig. 2 in association with the rotation of the release lever 71 that is operated in response to the forward folding operation of the seat back 8.
  • the memory operation lever 72 includes a sharp pressing piece 72a at a front end.
  • the pressing piece 72a is configured in such a manner that the through bore 15b of the upper rail 4 and the clearance C of the front stopper bracket 50 are arranged on a rotation locus of the pressing piece 72a.
  • the head portion 33a is prevented from being pressed by the pressing piece 72a of the memory operation lever 72.
  • the inclination surface 53a of the rear holding portion 53 guides the memory pin 33 to the pressing surface 61 a of the memory holding bracket 60 connected to the rear side of the inclination surface 53a while restricting the upward movement of the memory pin 33, which has moved downward by being pressed by the pressing piece 72a. Accordingly, the memory piece 30 is maintained to be fixed to the lower rail 3, and the upper rail 4 moves further forward while the memory piece 30 remains to be fixed to the lower rail 3.
  • the upper rail 4 is arranged in an arbitrary position where the relative movement of the upper rail 4 to the lower rail 3 is restricted by the lock lever 26 within the range from the intermediate position illustrated in Fig. 5A to the rearmost position illustrated in Fig. 6 , the memory piece 30 held by the front stopper bracket 50 is fixed to the bottom wall portion 12 of the lower rail 3 in association with the forward folding operation of the seat back 8.
  • the front holding portions 52a of the front stopper bracket 50 make contact with the contact portions 31 e of the memory piece 30 that is fixed to the lower rail 3, thereby once stopping the movement of the front stopper bracket 50. Accordingly, the upper rail 4 returns to a previous position prior to the forward movement, i.e., returns to a memory position. Afterwards, when the seat back 8 is pulled back, the contact piece 26d of the lock lever 26 disengages from the contact piece 71 a of the release lever 71 so that the relative movement between the lower rail 3 and the upper rail 4 is restricted at the memory position.
  • the inclination surface 53a of the rear holding portion 53 guides the memory pin 33 to the pressing surface 61 a of the memory holding bracket 60 connected to the rear side of the inclination surface 53a while restricting the upward movement of the memory pin 33 that moves downward while being pressed by the pressing piece 72a.
  • the upper surface of the head portion 33a is continuously pressed down by the pressing surface 61 a so that the memory piece 30 is fixed to the lower rail 3.
  • the memory holding bracket 60 specifically, the pressing surface 61 a extends to the rear end portion of the upper rail 4. Therefore, as illustrated by an imaginary line in Fig.
  • the aforementioned state of the memory piece 30 is maintained even when the upper rail 4 moves to the foremost position thereof in a state where the memory piece 30 is fixed to the rearmost portion of the lower rail 3. That is, even when the upper rail 4 moves to the foremost position, at least the memory pin 33 is arranged at a front side of the rear end of the upper rail 4. Consequently, the memory piece 30 is prevented from being exposed beyond the rear end of the upper rail 4. At this time, a space is ensured at a rear side of the seat 5 (the seat back 8) supported by the upper rail 4, thereby improving accessibility of a passenger, and the like, to the rear seat of the seat 5, for example.
  • the memory piece 30 that is in disengagement from the lower rail 3 is sandwiched in the longitudinal direction between the engagement wall portions 52 and the rear holding portion 53 integrally included in the front stopper bracket 50 so as to integrally move with the upper rail 4.
  • a variation of a position where the memory piece 30 is held is limited to a range of a production variation or an assembly variation of only the front stopper bracket 50.
  • a looseness of the memory piece 30 may be restrained accordingly.
  • a positional variation of the memory piece 30 relative to the lower rail 3 may be restrained, which leads to a further stable operation when the memory piece 30 engages with the lower rail 3.
  • the memory pin 33 is retracted to the slider body 31 while being guided along the inclination surface 53a that is in contact with the rear end surface of the head portion 33a.
  • a release of a state where the memory piece 30 is held by the rear holding portion 53 and an engagement of the memory pin 33 with the lower rail 3 (the engagement bore 12a) may be smoothly conducted.
  • the front end of the memory holding bracket 60 engages with the engagement portion 53b so as to be fixed to the upper rail 4 via the rear holding portion 53 (i.e., the memory holding bracket 60 is fixed to the upper rail 4 via the front stopper bracket 50).
  • a tightening member, and the like for assembling the front end of the memory holding bracket 60 to the upper rail 4 is not required, thereby achieving a simplified structure of the seat slide apparatus.
  • the memory piece 30 inserted into the upper rail 4, and the like is prevented from being exposed to the rear side of the rear end of the upper rail 4 even in a case where the upper rail 4 is arranged at the foremost position during the walk-in operation, or the like.
  • an improved appearance of the seat slide apparatus is obtained.
  • the memory piece 30 is prevented from being exposed, a passenger is restrained from touching the memory piece 30.
  • a return position i.e., the memory position of the upper rail 4, where the memory piece 30 is again held by the front stopper bracket 50 so that the memory piece 30 integrally moves with the upper rail 4, is prevented from being specified to an excessively forward position.
  • a space to get in and out of the seat 5 for the occupant seated thereon may be appropriately secured.
  • the memory holding bracket 60 is made of a resin material or an elastic material to thereby achieve an easy manufacture thereof and an improved assembly performance.
  • the aforementioned embodiment may be modified as follows.
  • the front end of the memory holding bracket 60 i.e., the support portion 61b
  • the front end of the memory holding bracket 60 may be supported by an appropriate support bracket separately provided from the front stopper bracket 50.
  • a vertical positional relationship between the lower rails 3 and the upper rails 4 may be specified in an opposite manner. That is, the upper rails 4 may be fixed to the vehicle floor 2 while the lower rails 3 may be fixed to the seat 5.
  • the single lower rail 3 and the single upper rail 4 may be provided at the seat 5, or three or more of the lower rails 3 and the upper rails 4 may be provided at the seat 5.
  • a seat slide apparatus for a vehicle includes a first rail (3), a second rail (4), a lock member (26), a memory member (30), a first holding member (50) holding the memory member to move integrally with the second rail in a state where a restriction of the relative movement between the first rail and the second rail is released on a basis of an operation handle (6), and a second holding member (60) holding the memory member so that the engagement of the memory member with the first rail is maintained in a state where the restriction of the relative movement is released in association with a forward folding operation of a seat back (8).
  • the first holding member integrally includes a body portion (51, 52) and a memory member holding portion (53) so as to sandwich the memory member in a state where the body portion engages with a front end portion of the memory member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP11154470.6A 2010-03-25 2011-02-15 Appareil coulissant de siège pour véhicule Not-in-force EP2371617B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010070861A JP5509980B2 (ja) 2010-03-25 2010-03-25 車両用シートスライド装置

Publications (3)

Publication Number Publication Date
EP2371617A2 true EP2371617A2 (fr) 2011-10-05
EP2371617A3 EP2371617A3 (fr) 2015-06-03
EP2371617B1 EP2371617B1 (fr) 2016-11-09

Family

ID=43983729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11154470.6A Not-in-force EP2371617B1 (fr) 2010-03-25 2011-02-15 Appareil coulissant de siège pour véhicule

Country Status (4)

Country Link
US (1) US8474777B2 (fr)
EP (1) EP2371617B1 (fr)
JP (1) JP5509980B2 (fr)
CN (1) CN102198808B (fr)

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WO2019063764A1 (fr) * 2017-09-28 2019-04-04 Adient Engineering and IP GmbH Capuchon d'extrémité pour un rail d'un réglage de glissière

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WO2009048065A1 (fr) 2007-10-11 2009-04-16 Aisin Seiki Kabushiki Kaisha Dispositif de glissière de siège de véhicule
WO2011075661A1 (fr) * 2009-12-18 2011-06-23 Johnson Controls Technology Company Système de glissière de siège
JP5545835B2 (ja) * 2010-04-28 2014-07-09 シロキ工業株式会社 車両用スライドレール装置
DE102010055244B4 (de) * 2010-12-20 2012-08-30 Keiper Gmbh & Co. Kg Längseinstellbarer Fahrzeugsitz
DE102011017378B3 (de) * 2011-04-07 2012-04-19 Keiper Gmbh & Co. Kg Längseinsteller für einen Fahrzeugsitz
JP6079305B2 (ja) * 2013-02-28 2017-02-15 アイシン精機株式会社 車両用シートスライド装置
DE102013214175B4 (de) * 2013-04-30 2014-11-06 Johnson Controls Components Gmbh & Co. Kg Längseinstellbarer fahrzeugsitz
DE102013012284A1 (de) * 2013-08-14 2015-02-19 Volkswagen Aktiengesellschaft Easy-Entry-Verstellmechanismus für Dive-Down-Fahrzeugsitze beziehungsweise Sitzanlagen
JP6253936B2 (ja) * 2013-09-30 2017-12-27 トヨタ紡織株式会社 乗物用シート
JP6253935B2 (ja) * 2013-09-30 2017-12-27 トヨタ紡織株式会社 乗物用シート
JP6237304B2 (ja) * 2014-02-12 2017-11-29 アイシン精機株式会社 車両用シートスライド装置
KR20160083210A (ko) * 2014-12-30 2016-07-12 현대다이모스(주) 차량용 시트레일 록킹장치 및 그 조립방법
WO2017021427A1 (fr) * 2015-08-03 2017-02-09 Johnson Controls Gmbh Butée pour un rail d'un siège réglable en longueur
JP6614027B2 (ja) * 2016-05-20 2019-12-04 トヨタ紡織株式会社 シートクッション調整装置
JP6614028B2 (ja) * 2016-05-20 2019-12-04 トヨタ紡織株式会社 シートクッション調整装置
IT201800006569A1 (it) * 2018-06-21 2019-12-21 Dispositivo di scorrimento per un sedile di veicolo provvisto di un sistema di bloccaggio migliorato
KR102295175B1 (ko) * 2018-09-05 2021-08-30 마터 이탤리 에스알엘 개선된 잠금 장치가 제공된 차량 시트용 슬라이딩 장치
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WO2019063764A1 (fr) * 2017-09-28 2019-04-04 Adient Engineering and IP GmbH Capuchon d'extrémité pour un rail d'un réglage de glissière
CN111163972A (zh) * 2017-09-28 2020-05-15 安道拓工程技术知识产权有限公司 用于导轨调节装置的导轨的端盖

Also Published As

Publication number Publication date
CN102198808A (zh) 2011-09-28
EP2371617B1 (fr) 2016-11-09
EP2371617A3 (fr) 2015-06-03
CN102198808B (zh) 2015-07-22
US20110233369A1 (en) 2011-09-29
JP2011201437A (ja) 2011-10-13
JP5509980B2 (ja) 2014-06-04
US8474777B2 (en) 2013-07-02

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